Old 1970s SunTour and Shimano catalogs list French threaded freewheels, in addition to English. Many people consider them vaporware - products that were listed in catalogs, but never made it to market. I've actually seen a French threaded Maeda freewheel, so while they may be very rare, they did exist. However, I can't say that I've seen a French threaed Shimano freewheel, other than in a catalog.